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我重写我的最后一个问题，只是因为我想从differente角度攻击问题..C＃ - 定义作用域事件处理程序
问题是这样的。我有一个用C＃编写的类，有两个公共方法和一个事件处理程序，每当任何方法完成时触发。
我创建了这个类来调整表单中的代码。现在
，如果我引用这个类从写在VB.Net Windows进程的项目，我调用任何两种方法，该事件处理程序将不会触发
难道这个问题涉及到事件处理程序的范围或任何像那样？
如果有必要，我可以张贴代码
感谢
++++++++++++++++++++++++ UPDATE +++ +++++++++++++++++++++
好的..这里是代码。最初我是从一个类调用方法，但我修改了整个项目，看看问题是否与尝试从类中引发事件有关...因此，我有这个c＃webserver在端口8080上监听， http请求根据URL参数调用ENROLL或IDENTIFY。
只是为了澄清一点。这是一个网络服务器，可以在连接有USB指纹扫描仪的计算机上运行。然后，Web应用程序将对该计算机执行http请求，以便执行身份验证或注册，这些操作在Web服务器中编程，操作包含在我用SDK获得的扫描仪驱动程序中的方法。
在驱动程序的SDK中附带了一个C＃演示项目，这是一个简单的窗体，带有用于调用CLICK事件的ENROLL或IDENTIFY方法的按钮。 CLICK事件结束后（在其中执行ENROLL或IDENTIFY方法），然后触发事件并执行EventHandler。
因此，现在我已经在同一个项目中的所有代码，但它仍然以相同的方式执行......它进入ENROLL方法，该方法从WisSensorNLibLib类执行StartEnroll方法，但事件不会被触发，也不会触发由类自定义事件处理程序捕获...
也许我错在了定义或实例...我不知道。但该事件不会被触发...
所以这里是代码...（以及下面我将其粘贴在原演示程序代码，所以也许通过比较有人可以找出问题可能是什么）
namespace WinServer
{
using System;
using System.IO;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Data.SqlClient;
using System.Drawing;
//************************************
//This is the class that belongs to the Fingerprint Scanner
//************************************
using WisSensorNLibLib;
class WinServer
{
private TcpListener myListener ;
private int port = 8080 ; // Select any free port you wish
private Int16 id;
private string indx;
//************************************
//Create instance of WisSensorN
//************************************
WisSensorN WisObj = new WisSensorN();
private String mod;
private Int32 Rows;
public WinServer()
{
try
{
myListener = new TcpListener(IPAddress.Any, port) ;
myListener.Start();
Thread th = new Thread(new ThreadStart(StartListen));
th.Start() ;
}
catch(Exception e)
{
Console.WriteLine("An Exception Occurred while Listening :" +e.ToString());
}
}
public void SendHeader(string sHttpVersion, string sMIMEHeader, int iTotBytes, string sStatusCode, ref Socket mySocket)
{
//************************************
//Code not related to understand specific problem was removed
//************************************
}
public void SendToBrowser(String sData, ref Socket mySocket)
{
//************************************
//Code not related to understand specific problem was removed
//************************************
}
public void SendToBrowser(Byte[] bSendData, ref Socket mySocket)
{
//************************************
//Code not related to understand specific problem was removed
//************************************
}
// Application Starts Here..
public static void Main()
{
WinServer MWS = new WinServer();
}
public void StartListen()
{
//Call ENROLL method
Enroll();
mySocket.Close();
}
//**********************************
//EVENT CAPTURE
//**********************************
public void WisObj_DataEvent(WisSensorNLibLib.DATA data, string str)
{
switch (data)
{
//ENROLL
case DATA.DATA_ENROLL:
try
{
Console.WriteLine("success");
}
catch (Exception ee)
{
Console.WriteLine(ee.Message);
}
break;
//IDENTIFY
case DATA.DATA_IDENTIFY_CAPTURE:
try
{
Console.WriteLine("Success");
}
catch (Exception ee)
{
Console.WriteLine(ee.Message);
}
break;
}
}
//**********************************
//ENROLL
//After this method ends, WisObj_DataEvent should capture the event
//**********************************
public void Enroll()
{
try
{
WisObj.Open();
WisObj.DataEvent += new _IWisSensorNEvents_DataEventEventHandler(WisObj_DataEvent);
WisObj.StartEnroll();
}
catch
{
Console.WriteLine(ee.Message);
}
}
//**********************************
//IDENTIFY
//After this method ends, WisObj_DataEvent should capture the event
//**********************************
public void Identify()
{
try
{
WisObj.Open();
WisObj.DataEvent += new _IWisSensorNEvents_DataEventEventHandler(WisObj_DataEvent);
WisObj.IdentifyCapture();
}
catch
{
Console.WriteLine(ee.Message);
}
}
public void WisClose()
{
WisObj.Close();
}
}
}
原始Demo程序代码：
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using WisSensorNLibLib;
namespace OR200N_Demo
{
public partial class Form1 : Form
{
private const int MaxUser = 10;
WisSensorN WisObj = new WisSensorN();
string[] DB = new string[MaxUser];
int nEnrolled = 0;
string indx;
string msg;
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
MessageBox.Show("Please make sure the scanner is plugged!!");
WisObj.Open();
WisObj.DataEvent += new _IWisSensorNEvents_DataEventEventHandler(WisObj_DataEvent);
WisObj.SetDisplay((int)FingerPic.Handle);
}
private delegate void CompleteHandler(string bir);
private void Complete(string str)
{
Status.Text = str;
}
private void WisObj_DataEvent(WisSensorNLibLib.DATA data, string str)
{
switch (data)
{
case DATA.DATA_ENROLL:
indx = nEnrolled.ToString();
msg = "User #" + indx + " is enrolled successfully!!";
this.Invoke(new CompleteHandler(Complete), new object[] { msg });
DB[nEnrolled] = string.Copy(str);
nEnrolled++;
break;
case DATA.DATA_IDENTIFY_CAPTURE:
int nMatched;
nMatched = WisObj.Identify(str, DB);
if (nMatched < 0)
{
msg = "No valid finger matched!!";
this.Invoke(new CompleteHandler(Complete), new object[] { msg });
}
else
{
indx = nMatched.ToString();
msg = "User #" + indx + " is matched!!";
this.Invoke(new CompleteHandler(Complete), new object[] { msg });
}
break;
case DATA.DATA_VERIFY_CAPTURE:
break;
}
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
WisObj.Close();
}
private void Enroll_Click(object sender, EventArgs e)
{
if (nEnrolled >= MaxUser)
{
MessageBox.Show("Exceed maximum enrolled number (10)!!");
}
else
{
Status.Text = "Please put your finger on the scanner!!";
WisObj.StartEnroll();
}
}
private void Identify_Click(object sender, EventArgs e)
{
Status.Text = "Please put your finger on the scanner!!";
WisObj.IdentifyCapture();
}
}
}
很难说没有看到代码。你能展示C＃代码吗？ – 2011-02-28 16:38:08
发送一些代码，否则我们可以猜测... – 2011-02-28 16:38:46
为什么有一个事件处理程序？你不能使用另一种方法，而是在两个公共方法的末尾调用它。 – 2011-02-28 16:41:02